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Finding the Fourth Proportional to 98,127.80, 146,802.90 and 85,124.60

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Solution

The fourth proportional to 98,127.80, 146,802.90 and 85,124.60 is: 127,349.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127.80 : 146,802.90 = 85,124.60 : x
  2. Step 2: Convert to fraction form
    98,127.80/146,802.90 = 85,124.60/x
  3. Step 3: Cross multiply
    98,127.80x = 146,802.90 × 85,124.60
  4. Step 4: Simplify right side
    98,127.80x = 12,496,538,141.34
  5. Step 5: Solve for x
    x = 12,496,538,141.34/98,127.80
  6. Step 6: Final answer
    x = 127,349.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.